Ventilator



May 29, 1928. 1,671,171

E. VAN NOORDEN May 29, 1928.

E. VAN NOORDEN VENTILAvToR Filed March 10, 192e Patented May 29, 1928.

@UNITED STATES EZEKIEL van Noorman, or nnooxnrnn, MASSACHUSETTS.

VENTILATOB. v

Application `flied march 10,1926. serial No. 93,678.

. The invention relates to thatjtype of ventilator having a rotary head or cowl andes-v peeially to that type in which the opening 0,1 passage into and vthrough the head is controlled by a damper having attachedto it a liexibleconnection for operating the damper.

The special object of the invention is to provide a very simple but particularly efficientarrangement for so mounting the head on the bodyof the `ventilator and for so fixing the head to the body as will ensure freedom of rotation especially when the head is being subjected to lateralstrains.

The invention can best be seen and understood by reference tol the l drawings in Figure lshows 'the ventilator Amainly in cross verticalsection, certain ofthe interior parts being shown in side elevation.

1+`ig.2 isa section on the line 2-2 of Fig( f Y. Fig. f3 is a verticalsection showing in enlarged detailA a portion of the structure shown in Figi. v

l rrepresents the body of the ventilator. This is generally vcircular in form and is mounted on any suitable base 2. Sis the rotary head or cowl generallycircular in formand which is fitted withthe `usual vane or wing tby which it is rotated. Onone side the head has an outlet cont-rolled .by a hingeddamper 5 operated by a chain -or flexibley connection 6 secured to the damper. a pulley 7 arranged in the top of the head and from which pulley the chain depends. lThe head is mounted'to rotate on the body `of the ventilator as follows v ,The body lof the ventilator on the inside at the top is provided with an annular rail 8.v` This rail occupies a position spaced from the exterior wall of the body and preferablyv not far downwardly .and inwardly removed from the top edge 9 of the. body. The rail is concentric with the vertical centre of the body. It is fixed to the body by suitable fastenings or bolts 10 which pass through suitable space blocks 11 interposed between the rail and the body. Thus 'disposed and secured, the rail becomes a body fixture. In similar manner the head 3 of the ventilator on the inside at the bottom is provided with an annular rail 12 which occupies a position spaced from the exterior wall of the head and preferably not far upwardly and inwardly removed from the bot-y The chain extends backto pass over tomedge 13 of the head. The rail 12 is concentric with the verticalcentreof the head and isfastened to the head by suitable bolts or fastenings 14, space blocks 15 being interposed between the; rail `and head through which the fastenings extend. Thus disposed and arranged, the rail 12 becomes a 'lixture with the head and turns with it.

The mounting `of the head, upon the body of the ventilator, is such that the vertical centres of the head and body will be in alignmentand when thus arranged the two rails 8 and l2 will occupy positions inf vertical alignment one above the other in spaced relations onlytherespective tracksin a manner presently to be explained, reference bein first made, however, to the manner in whic the head is fixed to the body against lateral displacement and in a manner to permit of the rotation ofthe head on the wheels as aforesaid. v

Extending diametrically crosswise through the body, preferably at al point `just below its track 8 isa crossbar 18. This bar is provided with flanges at its `opposite ends by 'which it is fixed to the opposite sides of the body by suitable bolts orl ffastenings 19. This bar has secured toit a strap 20. This strap together with the bar, 18 is bent at theirl respective centres to form an eye 21 concentric with the vertical centre of the body. n

The headjisl similarly fitted with a crossbarl 22 `whichextends diametrically across the head at a point preferably just above its track 12. The bar 22 is provided with flanged ends by which it is lixed 4to the opositesides of the head by suitable fastenings or bolts 23. The bar has secured to it a strap 24 which together with the bar is bent to kform an eye 25 concentric with the vertical centre of the head. Passedthrough the eyes 21y and 25, thus .fixed respectively vto the body and head, is a vertical pin 26 with extension at its opposite ends beyond the respective eyes. Secured to the ends of the pin t-hus extending are collars 27 28 pin betweentheeyes 2l and 25.

which bear against the respective eyes. Thus thehead and body are connected and upward displacement of the head prevented. The vertical pin26` also functions to` prevent any undue lateraldisplaceinent of the head with relation to the body. The bars 18 and 22 and straps secured to them, which form the respective e es through which the pin extends, are preferably of flat bar metal and provide relatively long bearings for the pin at the points ofthe respective eyes. l/Vith the ins fitting snugly `wit-hin the eyes the head has little chance :for lateral displacement `In this same connection, if desired,

lthe eye 2l may be bound iixedly to the 1pin preventing its rotation, but allowing'free 1rotation ofthe head. i

fl/Vith the head thus mounted to turn upon the respective wheels andwith the pin 26 thusconnecting the head to the body,a relatively long bearing surface is left alongthe Arranged to turn upon the `bearing thus provided by Y vided with pins 32 passed through them` at points` just adjacent the opposite `sides of the wheels, thereby boxing the wheels and making them to track right on the respective rails duringthe rotation of `the head.

With a head thus mounted to rotate a space 33 willfbe left between the top edge 9 of the bodyand the bottom edge 13 of the' head. This space should be as small as possible, `but leave suiiicient clearance between the body and head ytoprevent contact between the body and head during'- the-rotation of the head.` The space is enclosedby means of a guard in the nature of an apron 341- fixed to the head. y i i i i It is also to be observed thatthe vertical pin 26, which operates to hold .the head onto refinar` the body, is a hollow pin and through it the chain 6, which operates the damper, extends, the pin thus actingas a guide for the chain as well as preventinfrthe chain from intern feringwith any of t -e operating parts during the rotation of the head.

Having` thus fully described my invention, I claim and desire to secure by Letters Patent of the Unitedl States l. In aventilator, the combination comprising the iixedibody of the ventilator, a rotary head, circular spaced rails fastened respectively to the body and head of the ventilator, wheels interposed betweenv the rails to track thereon and on which wheels the head turns, a vertical'pincentrally arranged within the ventilator, fixtures connected to the body and head respectively supporting said pin by which it will function to fasten the headto the body with permitted rotation of the'head, afhub-forming member common to all of said wheels rotatable inside the ventilator on saidpin providinvf a bearinfr therefor and connections between said member 'and wheels by which the member will function to retain the lwheels on said rails in proper spacedl relation to one another.

2. In a` ventilator, theV combination com ssi body and head of the ventilator, wheels interposed between the railsl to track thereon and on which wheels the head turns,`a hollow vertical pin or tube centrally arranged within the ventilator, fixtures connected' to the body and head respectively supporting the pin by which itwillfunction to fasten `the head to the body with permitted rotation of the head, a hub-forming member commento all of said wheelsrotatableinside the ventilator on Vsaidpin providing'a. f

` bearing therefor, connections'` between said member and Wheels by which the Vmenfiber will function to retain thewheels on Asaid rails' in proper spaced relation to one another, and a flexible connection foroperat- `'ingsaid damper extending through said pin.

EZEKIEL van NoonnnN, i 

